\begin{tabular*}{\hsize}{@{\hskip\tabcolsep\extracolsep\fill}l*{4}{c}}
\toprule
                              &\multicolumn{1}{c}{2004}&\multicolumn{1}{c}{2006}&\multicolumn{1}{c}{2008}&\multicolumn{1}{c}{2010}\\
\midrule
Total number of votes (thousand)&      263.25&      191.26&      279.81&      202.31\\
                              &     (57.75)&     (52.88)&     (60.16)&     (50.47)\\
\addlinespace
Democratic candidates vote share (\%)&       54.07&       59.64&       61.03&       51.54\\
                              &     (23.99)&     (22.07)&     (21.70)&     (19.23)\\
\addlinespace
Republican candidates vote share (\%)&       45.93&       40.36&       38.97&       48.46\\
                              &     (23.99)&     (22.07)&     (21.70)&     (19.23)\\
\addlinespace
Third party candidates vote share (\%)&        2.01&        0.00&        0.00&        0.00\\
                              &      (3.51)&      (0.00)&      (0.00)&      (0.00)\\
\addlinespace
Incumbent candidates vote share (\%)&       71.50&       69.78&       70.72&       64.72\\
                              &     (12.67)&     (14.93)&     (14.24)&     (12.96)\\
\addlinespace
Number of Democrats in the House&      201.01&      232.00&      257.00&      194.12\\
                              &      (0.24)&      (0.00)&      (0.00)&      (8.42)\\
\addlinespace
Number of Republicans in the House&      233.00&      203.31&      178.53&      242.00\\
                              &      (0.00)&      (3.06)&      (3.60)&      (0.00)\\
\addlinespace
Number of Independents in the House&        1.00&        0.01&        0.00&        0.00\\
                              &      (0.00)&      (0.10)&      (0.00)&      (0.00)\\
\midrule
Districts                     &         287&         287&         285&         285\\
\bottomrule
\end{tabular*}
